| Name | Rhizocarpon obscuratum (Acharius) A. Massalongo |
| Authorship | (Acharius) A. Massalongo |
| Rank | Species |
| Placed in | Rhizocarpon Ramond ex de Candolle |
| GUID | urn:lsid:indexfungorum.org:names:404048 |
| Citation | 1852 Ric. Auton. Lich. Crost. 103 |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Rhizocarpon obscuratum (Acharius) A. Massalongo |
| Identification made in | [no date] (11), 1998 (1) |
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